function popupcentree(page,largeur,hauteur,options)
{
	var top=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
	window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}

// iens = 1 si internet explorer ou mozilla
var iens = document.layers?0:1;

function agrandir(portlet) {
	if (iens==1) {
		document.getElementById("hide_" + portlet).style.display="none";
		document.getElementById("show_" + portlet).style.display="block";
	}
}
function reduire(portlet) {
	if (iens==1) {
		document.getElementById("show_" + portlet).style.display="none";
		document.getElementById("hide_" + portlet).style.display="block";
	}
}

function SwitchMenu(obj){
	if(document.getElementById)
	{
		var el = document.getElementById(obj);
		var ar = document.getElementById("cont").getElementsByTagName("div");
		
		if(el.style.display == "none")
		{
			for (var i=0; i<ar.length; i++)
			{
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}
		else
		{
			el.style.display = "none";
		}
	}
}

function ChangeClass(menu, newClass) { 
	 if (document.getElementById) { 
	 	document.getElementById(menu).className = newClass;
	 } 
}